Clutch



W. J. RAY.

Ollitoh. 0. 228,276. Patented June 1, i880.

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I WILLIAM J. BAY, OF ISHPEMIN G, MICHIGAN.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 228,276, dated June 1,1880.

Application filed March 24, 1880.

To all whom it may concern Be it known that I, WILLIAM J. RAY, ofIshpeming, in the county of Marquette and State of Michigan, haveinvented certain new and useful Improvements in Clutches; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit pertains to make and use it, reference being had to the accompanyingdrawings, which form part of this specification.

My invention more particularly relates to that class of clutches whichemploy two curved friction-pads having their corresponding extremitiesconnected together by adjustingrods, the latter having their oppositeend portions provided with reverse screwthreads, while their centralportions are provided with arms adapted to be moved by suitablemechanism.

My improvement consists in the special combination of detailshereinafter specified and claimed.

In the drawings, Figure 1 is a sectional view of my device adapted foruse in connection with a hoisting-drum for mines. Fig. 2

, is a detached plan view, showing the mechanism by which it isoperated.

A represents any suitable frame adapted to hold the shaft and otheroperative parts of my device. B represents a driving-shaft, and O ahoisting-drum. The outer casing of this drum 0 is prolonged, therebyaffording a receptacle for my clutch mechanism. Shoes D, preferably madeof wood, are titted in this prolonged portion of tlTeTlrum. Metallicsections E, formed independent of said shoes, have their oppositeextremities respectively provided with inwardly-pro jecting ears E,having screw-thread openings. These two sections are connected togetherby means of the right and left screws F F. To these right and leftscrews is adjustably attached the crank G, which, in turn, is attachedto the lever G, the latter being connected with the (ModeL) collar H.This collar H may be recessed to receive the lever I, by which itismanipulated.

It will now be seen that if the collar H is moved from the drum 0 itwill operate the lever G and withdraw the shoes D from contact with theinner face of the drum 0. This lever G is pivoted to the collar H at oneend. At the other it is pivoted to the crank G, which, in turn, ispermanently attached to the double screw F; and, on the other hand, ifthe collar is crowded toward the drum, the shoes D will be forcedagainst the inner face of the drum 0, and serve as a permanent lock oras a brake, depending upon the pressure given to the lever l.

f f are set-screws passing through one arm of the crank G and adapted toengage with the double screw F. The object of this arrangement is topermit the double screw F to be adjusted, and when properly adjusted'tobe retained in place by the set-screw f. This enables the wear of theshoes D, owing to its contact with the face of the drum 0, to be takenup, thereby permitting the use of the shoe D until it is entirely wornout.

When my device is used in connection with a hoisting-drum for mines Iprefer, as an additiqnal means of security, to attach the brake to theframe A, adapted by any suitable means to operate upon the flange ordrum.

What I claim is- The combination, with sections E, whose oppositeextremities are respectivelyprovided with iuwardly-projectin g ears E,having screwthread openings, of screw-rods 1*, provided with cranks G,levers G, and sliding collar H, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM J. RAY.

\Vitnesses:

J NO. ORoWELL, Jr., W. E. DONNELLY.

